Jeremy Corbyn faces a fresh Brexit headache from some of his Labour Councillors

In the letter - revealed by PoliticsHome - they call for a change of policy on Brexit - saying the party should be "committed to providing the opportunity for people to change their mind”.

And exposing the deep divisions tearing the Labour party apart and the concerns over Mr Corbyn’s leadership, the councillors say that offering voters a second choice would show “bravery, maturity and the principled leadership the country so desperately needs”.

Theresa May has insistedt hat she will respect the result of our vote last June

“Their approach to the negotiations has been an embarrassing display of arrogance, under-preparedness and bone-headed jingoism.

“But while their particular unsuitability as negotiators has been made plain, the contradictions inherent in the Brexit project itself should concern the Labour Party far more than has been the case up to now.

“We should be prepared to offer the electorate the opportunity to say whether leaving the EU is really in the best interests of the country.”

Meanwhile the Treasury’s former top mandarin has said the economic impact of Brexit "should be limited" if the Government makes the right choices next year.

Lord Macpherson, who wrote the Treasury’s controversial Project Fear warnings during the referendum last year, urged Theresa May to “look forward not back” in her approach to forging a new deal with the EU.

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He told the Financial Times: “There is still all to play for. If the government relentlessly focuses on achievable outcomes in Brussels and pursues a sensible economic policy at home, it could yet keep any lasting damage from Brexit to a minimum. But that remains a pretty big ‘if’."

It marks an about-turn for the ex-Treasury chief, who was lambasted during the referendum campaign over his controversial report that claimed Brexit would leave families £4,300 a year worse off.

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